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Among the first 842 convection ovens sold to customers 143 required some adjustment during the warranty period. Estimate the probability that a newly purchased convection oven will require some adjus?
Kinbel
842 = m .. 143 = s,, s/m is the prob .. so
143/842 = .17
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∙ 12y ago
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Alternate Wordings for 'In a shop there are 20 customers 18 of whom will make a purchase. If three customers are selected one at a time at random what is the probability that all will make a purchase?
Here is another way to phrase the question: If 18 out of 20 customers make a purchase in a shop, and three customers are selected at random, what is the probablity that all will make a purchase? Each random customer has a 18/20 chance of being one that purchased, so the probability that all three make a purchase is 18/20*18/20*18/20=.729
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